Large capillary hemangioma of the temporal bone with a dural tail sign: A case report

The present study reports a rare case of large capillary hemangiomaof the temporal bonewith a dural tail sign. A 57-year-old female presented with pulsatile tinnitusand episodic vertigo associated with a ten-year history of an intermittent faint headache. Magnetic resonance imaging revealed a mass in the right petrous bone, which was hypointense on T1-weighted images and heterogeneously hyperintenseon T2-weighted images, and showed a dural tail sign following gadolinium administration. Pre-operatively, this tumor was believed to be a meningioma. During surgery, the vascular tumor was removed by a modified pterionalapproach. A histopathological examination indicated that the tumor was a capillary hemangioma. Although intraosseous capillary hemangiomasare rare, they most frequently affect the temporal bone. Hemangiomasof the temporal bonemay mimic other more common basal tumors. The diagnosis is most often made during surgical resection. The dural tail sign is not specific for meningioma, as it also occurs in other intracranial or extracranial tumors. The treatment of intratemporal hemangiomasis complete surgical excision, with radiotherapy used for unresectable lesions. To the best of our knowledge, the present study is the fourth case of intraosseous intracranial capillary hemangioma, but the largest intratemporal hemangiomato be reported in the literature to date.